topic Re: Ana/crash not working in Operating System - OpenVMS

Ana/crash not working

Superstar — Sat, 22 Aug 2009 07:21:58 GMT

Hi,

In OVMS 7.3-2 I get the below error when ana/crash command is invoked. Dump is enabled on a non system disk and that disk is shadowed. I have attached more information about the system Could someone please help me to fix this? If you need any other information please let me know.

YSTEM> ANA/CRASH DSA0:[SYS0.SYSEXE]SYSDUMP.DMP
%SDA-I-USEMASTER, accessing dump file via _$1$DKB0:, master member of shadow set
_DSA0:

OpenVMS (TM) system dump analyzer
%SDA-E-NOTALPHADUMP, dump file does not contain an OpenVMS Alpha dump

Regards,
Superstar

Re: Ana/crash not working

Superstar — Sat, 22 Aug 2009 07:26:10 GMT

Looks attachemnt is missing hence adding it again.

SYSTEM> SH DEV DSA0
Device Device Error Volume Free Trans Mn
Name Status Count Label Blocks Count Cn
DSA0: Mounted 0 SYSPAGE 38769375 3
$1$DKB0: (CIRA1H) ShadowSetMember 0 (member of DSA0:)
$1$DKB100: (CIRA1H) ShadowSetMember 0 (member of DSA0:)

SYSTEM> DIR .DMP

Directory DSA0:[SYS0.SYSEXE]

SYS$ERRLOG.DMP;1 SYSDUMP.DMP;2

Total of 2 files.

SYSTEM>MC SYSGEM SHOW DUMP

Parameter Name Current Default Min. Max. Unit Dynamic
-------------- ------- ------- ------- ------- ---- -------
DUMPSTYLE 13 0 0 -1 Bitmask D

SYSTEM> S=F$GETENV("DUMP_DEV")
SYSTEM> SH SYM S
S = "SCSI 2 1 0 0 0 0 0"

Re: Ana/crash not working

Volker Halle — Sat, 22 Aug 2009 09:52:52 GMT

Hi,

if you try to put the system dump file OFF the system disk (this functionality is called DOSD = Dump Off System Disk), that disk can NOT be a shadowed disk.

So either use a non-shadowed DOSD disk or leave the dump file on the system disk (in that case, it can be a shadowed system disk).

Volker.

Re: Ana/crash not working

Jur van der Burg — Sat, 22 Aug 2009 11:08:36 GMT

Try ANA/CRASH/SHADOW_MEMBER=$2$DKB100 to get the dump of the member where is has been written to (Not sure if that capability is already in V7.3-2 though).

Jur.

Re: Ana/crash not working

Superstar — Sat, 22 Aug 2009 12:58:24 GMT

Hi Jar,

Thanks for thr reply. Looks its it is not supported in this version.

Regards

Re: Ana/crash not working

Superstar — Sat, 22 Aug 2009 13:01:11 GMT

Hi Volker,

Thanks for the reply. So then I need to change the dumpstyle parameter and dump_dev accordingly. Currently dumpstyle is set as 13 shall I set it to 9 what is ur recommendations.

regards

Re: Ana/crash not working

Volker Halle — Sat, 22 Aug 2009 15:55:22 GMT

Hi,

is there really a valid dump on one of the members of that DSA0: shadowset.

Setting up DOSD is described in the OpenVMS System Manager's Manual Volume 2: chapter Writing the System Dump File to an Alternate Disk

http://h71000.www7.hp.com/doc/82final/aa-pv5nj-tk/aa-pv5nj-tk.html

It clearly says: The dump device cannot be part of a shadow set unless it is also the system device and the master member of the shadow set.

IF you believe there had been a valid system dump written to one of the members for the DSA0: shadowset AND you are eager to try to find out, if it's readable, you could dismount one of the members (with DISM/POLICY=MINI to save you a full shadowcopy afterwards) and then try to access the dump file on the shadowset itself or on the privately mounted removed member.

Volker.

Re: Ana/crash not working

Volker Halle — Sat, 22 Aug 2009 15:58:57 GMT

Hi,

to direct your dumpfile to the system disk, set DUMPSTYLE=9 and DUMP_DEV to the device name(s) of your system disk, if there are multiple pathes or multiple members of the system disk.

Volker.